Backups are good to have, I agree. But,
Wouldn't you say Twitter is going against the interest of some countries, and getting banned for allowing hate speech and misinformation .
Mastodon, does not tend to go out of it's way to allow hate speech and in cases that such speech do get through, servers will defederate, essentially banning these bad servers from a good chunk of the Fediverse.
Twitter, disagrees to moderate this same speech, and is owned and controlled by one.